Module: Erosion / Disc Erosion 3D ()

Description:

Disc Erosion 3D is one of the configurations of the module Erosion. For other configurations, see the port Type and port Interpretation.

For an introduction, see:

• section Morphology
• introduction and definition for erosions

This module performs a 3D erosion of an image using a structuring element matching with an oriented disc.

Erosion direction is given by (, ) with the following formula:

This direction can be illustrated on the unit sphere:

See also: Disc Dilation 3D.

Connections:

Input Image [required]
The input image to be processed. Supported types include: binary and label image (Uniform Label Field), grayscale image (Uniform Scalar Field) and color image (Uniform Color Field).

Ports:

Type

This port selects the configuration of this module. The available configurations are:

• Cube Erosion,
• Disk Erosion,
• Line Erosion,
• Ball Erosion,
• Color Erosion.

Interpretation

This port specifies whether the input will be interpreted as a 3D volume or a stack of 2D images for processing.

• "3D": the module configuration is set to 3D. The image will be processed as a whole in 3D.
• "XY planes": the module configuration is set to 2D. The image will be processed slice per slice.

Theta Angle

This port refers to the rotation of the angle for disc normal in degrees.

Phi Angle

This port refers to the rotation of the angle for disc normal in degrees.

Size

This port refers to the half-kernel size.